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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Itbayat in Philippines



Earthquake location 20.8769S, 122.0404WA light earthquake magnitude 4.1 (ml/mb) has occurred on Saturday, 22 kilometers (14 miles) from Itbayat in Philippines. Date and time of earthquake in UTC/GMT: 19/12/15 / 2015-12-19 07:40:20 / December 19, 2015 @ 7:40 am. Unique identifier: us100048us. Ids that are associated to the event: us100048us. The temblor was reported at 15:40:20 / 3:40 pm (local time epicenter). Exact location of event, longitude 122.0404 East, latitude 20.8769 North, depth = 151.64 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 151.64 km (94 miles).

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Basco. Close country/countries that might be effected, Philippines (c. 99 900 000 pop). Event epicenter was 48 km (30 miles) from Basco (c. 7 300 pop).

In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days four and in the last 365 days ten earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 22 km ENE of Itbayat, Philippines.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 122.0404° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 20.8769° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 151.64 km Depth of the event in kilometers.
Place 22km ENE of Itbayat, Philippines Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-12-19 07:40:20 Time when the event occurred. UTC/GMT
Updated 2016-01-09 10:56:24 Time when the event was most recently updated. UTC/GMT
Timezone offset 480 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 259 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.127 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.56 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 150 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us100048us Id of event.
Event Code 100048us An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100048us, A comma-separated list of event ids that are associated to an event.

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